Method and apparatus for paging channel monitoring in association with small data transmission procedure

Abstract

Provided are a method and apparatus for monitoring a paging channel in association with a small data transmission procedure in a wireless communication system. A terminal may initiate a small data transmission (SDT) procedure. Further, the terminal may monitor a paging channel, while the initiated SDT procedure is ongoing and a timer is not running. The timer may be associated with handling a failure in resumption of a radio resource control (RRC) connection. The paging channel may be monitored based on that i) the SDT procedure is associated with configured grant (CG) SDT and ii) an extended CG SDT periodicity is configured. The extended CG SDT periodicity may be used to calculate a transmission periodicity for uplink that corresponds to a resource determined using hyper system frame number (H-SFN) information and system frame number (SFN) information.

What is claimed is: 
     
       1. A method for a terminal to operate in a wireless communication system, the method comprising:
 initiating a small data transmission (SDT) procedure; and 
 monitoring a paging channel, while the initiated SDT procedure is ongoing and a timer is not running, 
 wherein the timer is associated with handling a failure in resumption of a radio resource control (RRC) connection, 
 wherein the paging channel is monitored based on that i) the SDT procedure is associated with configured grant (CG) SDT, and ii) an extended CG SDT periodicity is configured, and 
 wherein the extended CG SDT periodicity is used to calculate a transmission periodicity for uplink that corresponds to a resource being determined using hyper system frame number (H-SFN) information and system frame number (SFN) information, 
 wherein the extended CG SDT periodicity is defined by at least one of n*14*1280 or n*12*1280, where n is a periodicity configuration value. 
 
     
     
       2. The method of  claim 1 , wherein the extended CG SDT periodicity, the H-SFN information and the SFN information are received in a single RRC information element. 
     
     
       3. The method of  claim 2 , wherein the H-SFN information and the SFN information are used for determination of an offset of the resource in time domain. 
     
     
       4. The method of  claim 1 , wherein the SDT procedure is initiated in an RRC inactive state. 
     
     
       5. The method of  claim 1 , wherein, when the extended CG SDT periodicity is defined by n*14*1280, the periodicity configuration value is configured by one value in a first set consisting of 1, 2, 4, 8, 48, 96, 240, 472, 944, 1408 and 2816 for a subcarrier spacing (SCS) of 15 kHz, in a second set consisting of 2, 4, 8, 16, 96, 192, 480, 944, 1888, 2816 and 5632 for a SCS of 30 kHz, in a third set consisting of 4, 8, 16, 32, 192, 384, 960, 1888, 3776, 5632 and 11264 for a SCS of 60 kHz, in a fourth set consisting of 8, 16, 32, 64, 384, 768, 1920, 3776, 7552, 11264 and 22528 for a SCS of 120kH, in a fifth set consisting of 32, 64, 128, 256, 1536, 3072, 7680, 15104, 30208, 45056 and 90112 for a SCS of 480 kHz, or in a sixth set consisting of 64, 128, 256, 512, 3072, 6144, 15360, 30208, 60416, 90112 and 180224 for a SCS of 960 kHz. 
     
     
       6. The method of  claim 1 , wherein, when the extended CG SDT periodicity is defined by n*12*1280, the periodicity configuration value is configured by one value in a third set consisting of 4, 8, 16, 32, 192, 384, 960, 1888, 3776, 5632 and 11264 for a subcarrier spacing (SCS) of 60 KHz. 
     
     
       7. A terminal in a wireless communication system comprising:
 a processor configured to cause the terminal to: 
 initiate a small data transmission (SDT) procedure; and 
 monitor a paging channel, while the initiated SDT procedure is ongoing and a timer is not running, 
 wherein the timer is associated with handling a failure in resumption of a radio resource control (RRC) connection, 
 wherein the paging channel is monitored based on that i) the SDT procedure is associated with configured grant (CG) SDT, and ii) an extended CG SDT periodicity is configured, and 
 wherein the extended CG SDT periodicity is used to calculate a transmission periodicity for uplink that corresponds to a resource determined using hyper system frame number (H-SFN) information and system frame number (SFN) information, 
 wherein the extended CG SDT periodicity is defined by at least one of n*14*1280 or n*12*1280, where n is a periodicity configuration value. 
 
     
     
       8. The terminal of  claim 7 , wherein the extended CG SDT periodicity, the H-SFN information and the SFN information are received in a single RRC information element. 
     
     
       9. The terminal of  claim 8 , wherein the H-SFN information and the SFN information are used for determination of an offset of the resource in time domain. 
     
     
       10. The terminal of  claim 7 , wherein the SDT procedure is initiated in an RRC inactive state. 
     
     
       11. The terminal of  claim 7 , wherein, when the extended CG SDT periodicity is defined by n*14*1280, the periodicity configuration value is configured by one value in a first set consisting of 1, 2, 4, 8, 48, 96, 240, 472, 944, 1408 and 2816 for a subcarrier spacing (SCS) of 15 kHz, in a second set consisting of 2, 4, 8, 16, 96, 192, 480, 944, 1888, 2816 and 5632 for a SCS of 30 kHz, in a third set consisting of 4, 8, 16, 32, 192, 384, 960, 1888, 3776, 5632 and 11264 for a SCS of 60 kHz, in a fourth set consisting of 8, 16, 32, 64, 384, 768, 1920, 3776, 7552, 11264 and 22528 for a SCS of 120kH, in a fifth set consisting of 32, 64, 128, 256, 1536, 3072, 7680, 15104, 30208, 45056 and 90112 for a SCS of 480 kHz, or in a sixth set consisting of 64, 128, 256, 512, 3072, 6144, 15360, 30208, 60416, 90112 and 180224 for a SCS of 960 kHz. 
     
     
       12. The terminal of  claim 7 , wherein, when the extended CG SDT periodicity is defined by n*12*1280, the periodicity configuration value is configured by one value in a third set consisting of 4, 8, 16, 32, 192, 384, 960, 1888, 3776, 5632 and 11264 for a subcarrier spacing (SCS) of 60 KHz.